Improvement in steam-radiators



J. H. MILLS. Steam-Radiator.

No. 198,036. Patented Dec. 11.1877.

.uwx Enum@ N. PETERS, FHM'O-LITHOGRAFHEH, WASHINGTON. D. C. I

UNITED STATES PATENT OEEIGE.-

JOHN H. MILLS, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN STEAM-.RADIATO RS.

Specification forming part of Letters Patent No. 198,036, dated December 11, 1877; application filed April 27, 1817.

To all whom it may concern.-

Be it known that I, JOHN H. MILLS, of

Boston, in the county of Suffolk and State of and useful Improvements in Steam-Radiators,

. which improvements are fully set forth in the following .speciiication and accompanying drawing.

The object of this invention is to simplify the construction and operation of cast-metal radiators, so that, by making the sections of certain form, the wei ghtmay be less without reducing the strength of the casting, while the arrangement of the central vertical chamber provides a way of joining the sections together with so little labor as to largely reduce the cost of producing afoot of heating-surface in this material.

In the construction of steam radiators placed in the rooms to be warmed. two difculties are met with. If made of wrought-iron tubes, they are generally screwed vertically into a chambered base, which, resting on or close to the floor, is poor heating-surface of itself, preventing the best contact of air with the tubes,r and necessitating two joints for nearly every single foot of surface. The ends of these vertical tubes must also be covered by an iron or other cap, which increases the cost without increasing the heating-power.

If constructed of cast-iron, the sections are generally heavy, and the number of joints, whether faced or screwedjl prevents any reduction in the cost.

It is to this last class that my invention relates. and to the further improvement of having but one valve (a part of the construction) with the hand-wheel at the top of the radiat- 'or, easily reached without stooping, and not liable to leakage.

I construct my improved sectional radiator with a central vertical chamber, A, as shown in the drawing, from the sides of which are horizontally projected the tubes B, or such other surface as may be found most desirable, the vertical chamber being in communication above and below around the central tube C, which binds the several sections together.

The advantages vof this sectional central construction are that very light castings may be made and joined together with the least possible cost. No labor is required to prepare the joints, a flexible packing answering every purpose, as there is no strain from undue expansion. The sections and other portions can be shipped separately :and put together, where used, by any mechanic with a common wrench. Floors and carpets are less encumbered and liable to damage.

The construction of the foot E, having a chamber, D, within the same, with valve-seat F at the top, reduces the cost of even the one valve, and allows the hand-wheel H to be placed in a most convenient position.

I do not conne myself to the precise form of radiating-surface here shown, as the sections may be of any other desired form consistent with a vertical central chamber, through which the whole work of supply and return is effected.

I am aware that heaters have been made with a central body having radial arms in one casting for the entire radiator. I do not claim this construction, but the sectional construction shown, by which means the pieces may be shipped directly from the foundery, and be combined as desired at the place where used.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A steam-heating radiator, having a series of receiving and returning arms, B, projecting horizontally from the centralvertical supply and return chambers A, which, being combined and held together by a central tube, C, or its equivalent, operate substantially as shown and described.

2. In a steam-radiator constructed of vertical sections, having a central supply and re turn chamber, A, surrounding the induction` tube C, the single joint or point of contact between each two adjoining sections, as shown and described.

3. In sectional steam-radiators the combination of a steam-chamber, D, in the foot E,

diator, and receiving the water of condensation at the bottom, the seat F of the valve C conducting the steam to the top section, being secured to one end of said tube and which in turn supplies the steam downward the cap G to the other end, as shown and deto its neighbor, as shown and described. scribed. f

4. The combination, in a steam-radiator, of JOHN H' MILLS' a hollow foot` or base, E, a central vertical Witnesses: steam-induction tube, C, within the central ALBERT H. BENNETT, vertical' sectional return-chamber A, the tube WILLIAM N. GODDARD. 

